Posted by Anton Abaya at 2/6/2001 12:15 AM EST
Coach on team #419, Rambots, from UMass Boston / BC High and NONE AT THE MOMENT!
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In Reply to: Difference in forward/reverse drill motor speed
Posted by Patrick Dingle on 2/5/2001 11:38 PM EST:
: Has anyone noticed that the drill motors have a different angular velocity when in forward than in reverse? If so, how have teams overcome this problem if they use the motors for the drive system?
: Patrick
yes the drill motors are not in sync when they are running on opposite directions. this is because one motor is running in forward and the other one is going in reverse.
apparently there are two solutions, one is mechanical and the other is software. the mechanical solution is whats called a "right angle drive" or so they call it. basically what this does is it makes both run at the same direction therefore making the drive more efficient and not having to make the driver compensate for the drag occurring on one side.
check this link out.
http://sharingfirst.mit.edu/users/os...n/FRC2000page/
the software solution, is to sync the right to the left via ...software. this will take trial and error as it would vary from robot to robot. but the basic idea is "if right joystick is X, then left should be x+y (y=2-10?)..." with this, it's the left joystick (motor) that drags.
i hope i answered ur question.
-anton
"I think I did."